Islas de San Blas in October

December through April delivers the driest weather and calmest seas – this is peak season for good reason. Expect daily highs around 86°F with cooling trade winds and minimal rainfall. But you'll pay premium prices and need to book months ahead. January and February offer the most reliable weather, with sunny skies and gentle breezes perfect for island hopping. March can get windy, which creates choppier boat rides but also keeps temperatures comfortable. Here's the trade-off – May through November brings afternoon thunderstorms and rougher seas, but you'll have the islands mostly to yourself and pay 30% less. The rainy season isn't a total washout; mornings are often clear and beautiful. Just pack a rain jacket and be flexible with your plans.